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Mishimoto Racing Thermostat (87-06 2.5L, 4.0L or 4.2L Jeep Wrangler YJ & TJ)

Item J114556
Market Price $26.40 You Save 5% ($1.45)
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$24.95 (each)

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Ship to: Ashburn - 20149
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    Features & Details

    • Racing Thermostat
    • Opening Temperature 180 Degrees
    • Standard Flow Rating
    • Run a Cooler Engine
    • Ideal for Modified Wranglers
    • Copper/Stainless Steel Construction
    • Easy Installation
    • No Questions Asked Warranty
    • Fits 1987-2006 2.5L, 4.0L and 4.2L YJ and TJ Jeep Wranglers
    Cool Your Wrangler Down. The Mishimoto Racing Thermostat provides more efficient cooling throughout your Wrangler's engine allowing it to run cooler and making it ideal for modified Wranglers.

    Open Low for High Performance. With a standard flow rating, the Mishimoto thermostat opens up at 180° Fahrenheit, 10° lower than the standard factory thermostat temperature (190° Fahrenheit) This lets the coolant enter the engine block quicker and a cooler engine temperatures means more power, and it's copper and stainless steel construction means it will keep cooling for miles and miles.

    Easy Installation. The thermostat requires basic to moderate mechanical skill to be properly installed. Complete instructions are included.

    Limited Lifetime Warranty. This racing thermostat is covered under Mishimoto's 'no questions asked' limited lifetime warranty. Regardless of the defect Mishimoto will replace it. Please see complete warranty for details.

    Application. The Mishimoto Racing Thermostat is compatible with 1987-2006 2.5L, 4.0L and 4.2L Jeep Wrangler YJ and TJ.

    Fitment: 1987 1988 1989 1990 1991 1992 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 Details


    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Thermostat
    • (1) Instructions
    Installation Info
    Will it fit my Wrangler?
    • TJ Rubicon 2 Door - 03, 04, 05, 06
    • TJ Rubicon Unlimited 2 Door - 05, 06
    • TJ Wrangler 2 Door - 97, 98, 99, 00, 01, 02, 03, 04, 05, 06
    • TJ Wrangler Unlimited 2 Door - 04, 05, 06
    • YJ Wrangler 2 Door - 87, 88, 89, 90, 91, 92, 93, 94, 95

      Customer Photos (1) Submit Your Photo

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        Questions & Answers (2)

        2 Top Rated Questions

        I may be blind here but I didn’t see a tempature rating on this thermostat! 160-180-195 degree?

        • The Mishimoto thermostat opens up at 180° Fahrenheit, 10° lower than the standard factory thermostat temperature.

        Helpful (0)

        Do you carry the gasket for this thermostat if so what is the part#?

        • We do not have a replacement gasket for installation. We recommend contact Mishimoto or Mopar.

        Helpful (0)
        Post Your Question

          Customer Reviews (4) Write a Review

          Overall Rating 4.5

          out of 5 stars

          • Fit 5 5
          • Bang For Your Buck 4.5 4.5

          • 3/5

            September 09, 2019

            Shipping takes a long time

            Installation was easy, everything fit like it should. Only negative experience is the time it took to deliver. The item was shipped more than a week after the purchase.


            Year: 2003Submodel: Wrangler

            Helpful (0)

          • 5/5

            September 04, 2019

            Huge difference!

            It took me about 45 minutes to install the thermostat but only because I’m picky and cleaned the thermostat housing since I was there already. Part was extremely easy to install, just two basic tools. Took it out for a ride two days after and noticed a huge difference, it dropped a total of 10 degrees. I also, bought the blue mishimoto hoses which compliment my Jeep well.


            Year: 2003Submodel: Wrangler

            Helpful (0)

          • 5/5

            July 15, 2019

            Thermostat Mishimoto

            Very good product again I’m very happy with the purchase and would highly recommend this to everyone


            Year: 2004Submodel: Wrangler Unlimited

            Helpful (1)

          • 5/5

            September 15, 2018

            Noticed Difference Right Away

            Just had this thermostat installed today. I could tell the difference right away. It drives like a new oil change but the oil wasn't changed. Can't wait to try it on the trail.


            Year: 2006Submodel: Rubicon

            Helpful (13)

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